Industrial Test Systems, Inc., (ITS) is a leading American manufacturer of instruments and chemistries designed to test water quality parameters. ITS has developed over 100 tests and proprietary chemistries, many covered by Worldwide Patents and ETV/EPA performance-verified tests. ITS created the first and only EPA-approved test strip for Chlorine testing. Our latest product, the new handheld eXact iDip Smart photometer, eliminates common testing errors since there are no vials, liquids, and tablets to handle. The eXact iDip is EPA-Compliant for Chlorine testing, features 0.01 ppm resolution, and measures over 45 parameters.